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公开(公告)号：US20240254644A1
公开(公告)日：2024-08-01
申请号：US18289682
申请日：2022-04-21
Applicant: ZHENGZHOU UNIVERSITY
Inventor： Zhongwei ZHAO
Abstract: The present disclosure relates to a method for refining beryllium by molten salt electrolysis, the method comprises: firstly, constructing an electrochemical system, wherein an anode chamber contains an anode molten salt electrolyte, a crude beryllium anode is inserted in the anode molten salt electrolyte, a cathode chamber contains a cathode molten salt electrolyte, a cathode is inserted in the cathode molten salt electrolyte, the anode molten salt electrolyte and the cathode molten salt electrolyte are not in contact with each other but are connected with each other via a liquid alloy at the bottom of the inside of an electrolysis cell; and applying a current for electrolysis to obtain refined solid beryllium at the cathode.
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2.发明公开公开(公告)号：US20240247391A1
公开(公告)日：2024-07-25
申请号：US18289876
申请日：2022-04-21
Applicant: ZHENGZHOU UNIVERSITY
Inventor： Zhongwei ZHAO
CPC classification number: C25C3/36 , C25B1/33 , C25B9/09 , C25C3/08 , C25C3/18 , C25C7/025 , C25C7/04
Abstract: The present application belongs to the technical field of aluminum metallurgy, and specifically relates to a method for producing metallic aluminum and polysilicon with a high-silicon aluminum-containing resource. The method includes: pretreating the high-silicon aluminum-containing resource to obtain an aluminum-silicon oxide material; the aluminum-silicon oxide material is used to produce a metallic aluminum product and a copper-aluminum-silicon alloy with silicon enriched by molten salt electrolysis in a double-chamber electrolytic cell; and the copper-aluminum-silicon alloy is used to produce an aluminum-silicon alloy and/or polysilicon by molten salt electrolysis in a single-chamber electrolytic cell, and further separating the aluminum-silicon alloy by physical methods to obtain polysilicon. The present application has characteristics such as low production cost, continuous electrolysis operations, high product quality, and environmental friendliness.
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3.发明公开公开(公告)号：US20240240344A1
公开(公告)日：2024-07-18
申请号：US18289835
申请日：2022-04-21
Applicant: ZHENGZHOU UNIVERSITY
Inventor： Zhongwei ZHAO
Abstract: The present application relates to a method for preparing metallic titanium by molten salt electrolysis reduction of titanium dioxide, the method includes: constructing an electrochemical system, including an anode chamber filled with an anodic molten salt electrolyte and inserted with an anode, and a cathode chamber filled with a cathodic molten salt electrolyte and inserted with a cathode, where the anodic molten salt electrolyte and the cathodic molten salt electrolyte are connected through a liquid alloy accommodated at an inner bottom of the electrolytic cell without contacting with each other; and adding titanium dioxide to the anode chamber, and energizing for electrolysis to obtain metallic titanium at the cathode. The method of the present application has advantages such as low requirements for the titanium dioxide raw material, simple process flow, low energy consumption, environmental friendliness, and direct acquisition of high-purity metallic titanium.
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公开(公告)号：US20240240343A1
公开(公告)日：2024-07-18
申请号：US18289708
申请日：2022-04-21
Applicant: ZHENGZHOU UNIVERSITY
Inventor： Zhongwei ZHAO
IPC: C25C3/26
CPC classification number: C25C3/26
Abstract: The present disclosure provides an electrochemical method for the separation of zirconium and hafnium, using an electrolytic cell equipped with an anode chamber and a cathode chamber, wherein the anode chamber and the cathode chamber are separated by a liquid alloy. In particular, the liquid alloy comprises a crude zirconium and a matrix metal with the metal activity lower than zirconium. After the electrolysis reaction is started, since the metal activity series in the liquid alloy is: hafnium>zirconium>>matrix metal, the hafnium in the liquid alloy is oxidized prior to the zirconium, the hafnium in ionic form migrates into the cathode electrolyte in the cathode chamber, leading to a continuous decrease of hafnium content in the liquid alloy, whereas the zirconium remains in the liquid alloy. Accordingly, deep separation of zirconium from hafnium is achieved, and therefore, nuclear-grade zirconium products can be prepared.
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